Eris
/ˈɛrɪs/Astronomy
noun
(The name of) a trans-Neptunian dwarf planet orbiting the sun, mostly beyond the orbit of Pluto, and having a mass greater than that of Pluto.
- Eris, the ninth most massive object currently known to orbit the sun, was discovered in 2005 by a team of astronomers led by Mike Brown of the California Institute of Technology. The discovery was one of the main factors leading to the reclassification of Pluto as a dwarf planet..
Origin
Early 21st century; earliest use found in Science News. From ancient Greek Ἔρις, the name of the goddess of discord and strife, personification of ἔρις quarrel, strife, of unknown origin.
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